Johafn slavik



J. SLAVIK. Rotary-Engine.

No. 196,996. Patented Nov. 13, 187'?.

Trlveqor the cone with but two.

UNITED STATEs PATENT OFFICE.

,IMPROVEMENT IN ROTARY ENGINES.

Specification forming part of Letters Patent No. 196,996, dated November13, 1877; application filed February 14, 1877.

To all 'whom it may concern:

Be it known that, I J oHANN SLAviK, of the city of Rheydt, Prussia, haveinvented certain improvements in rotary pumps with straightlined motionof piston, of which the following is a specification:

In consideration of the fact that the rotary pumps now in use have manydisadvantages with respect to their durability, and that they cannotcompete with other pumps provided with pistons, I have constructed apump that, combining the advantages of both kinds of pumps, can be usedas a water-meter or a steam-engine.

Such an improved pump is constructed in the following way, asrepresented by the accompanying drawing.

The pump consists mainly of the body a a a a, with four cylinders, whichtiun easily on the cone c, which forms a two-way cock. b b b b are thepistons, and d a ring. The body of the pump is provided with fourpassages, By the rotary motion of the system of pumps a a a a,transferred to it by the ring d carrying the four pistons b b b b of thepumps, (one in a fixed position, the other three sliding freely on thering,) the passages will be alternately shut and opened, whereby thewater will be sucked in and expelled alternately through the passages.

By this arrangement all valves are dispensed with, and the annoyingrefusal of the pump to work can no more turn up on behalf of a disorderin these parts.

The ring d turns on four sheaves, e f g h, and is eccentrically placedto the axis of the system of pumps a a a a, whereby a backward andforward motion is imparted to the pistons b b b b, as such revolvewithin the ring, the degree of eccentricity being equal to half thestroke of the pump.

If water enters the pipe e' under pressure, the system of pumps willderive motion from it, thereby constituting a water motor or meter. Thesystem of pump need only be fixed between the pipes of theboiler-feeding apparatus, or any other watering-conduit, and byconnecting it with a revolving counting apparatus, the quantity of thewater passing through the conduit may easily and correctly be stated bythe number of revolutions.

The water motor or meter constructed in this way can be produced in asimple, durable,

d exact manner; and the liquid passing through the meter may even bedetermined at will, with respect to quantity, by simply shifting thecone c more or less out of the center.

With the meters now in existence this process was not possible, and theamount had to be calculated, before its construction, according to thedesired quantity of discharged liquid, then admitting no alteration ofthe once fixed measure, and, besides, rarely showing the exact quantityof the discharged liquid.

If steam in place of water enters the pipe z', the apparatus forms avery simple steam-engine, having several advantages compared to theordinary steam-motors-. c., it can be started from any position, nodead-centers being present 5 further, the loss of steam by leakagethrough the piston-packings will be overcome; and, iinally, no accidentscan 'arise from the breaking of keys in the connectingrods or of thecrank-pin, as in the ordinary machines.

I claim as my invention- The combination of an eccentric rim, d, runningon sheaves e f g h, with the piston-rods, (one in a fixed position, theother three sliding freely on the ring,) in such a manner that therotary motion derived from the pressure in the cylinders is transferredon the said rim, which can be used as a belt-pulley, both to use thepower when steam or water pressure is employed in the apparatus, and totransfer power to the machine when it shall act as a pump.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHANN SLAVIK.

Witnesses HENRY HnsolER, KRUGER BNNA.

